2 days ago I started cycling a 29 gallon. I stuck some seeded media into my filter from my 10 gallon and dosed with ammonia until I got my tank to 3.0 ppm. Tested it yesterday but only tested it for ammonia and nitrite. Ammonia was still at 3.0 and nitrite was at 0. Today I decided to test for nitrate. My ammonia was still at 3.0, nitrite was 0 and my nitrate seems to be around 7.0 ppm. How is this possible?